1428263412 has 12 divisors (see below), whose sum is σ = 3332614656. Its totient is φ = 476087800.

The previous prime is 1428263393. The next prime is 1428263423. The reversal of 1428263412 is 2143628241.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59510964 + ... + 59510987.

It is an arithmetic number, because the mean of its divisors is an integer number (277717888).

Almost surely, 2^1428263412 is an apocalyptic number.

1428263412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1428263412 is an abundant number, since it is smaller than the sum of its proper divisors (1904351244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1428263412 is a wasteful number, since it uses less digits than its factorization.

1428263412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119021958 (or 119021956 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 1428263412 is about 37792.3724050237. The cubic root of 1428263412 is about 1126.1669305896.

The spelling of 1428263412 in words is "one billion, four hundred twenty-eight million, two hundred sixty-three thousand, four hundred twelve".